It's no better at this point than many of the others. This and Eva have been the worst for me. .Andy, Speaktoit and Jeannie have been the best (not in any order).
I've tried a few of them at this point, and I still think Jeannie is the best. Voice recognition is more than just surprisingly accurate. Also her capabilities to "improvise" and understand what you mean are quite impressive. With Vlingo I tried asking "Where can I get some chicken wings around here?" No results found, google searched it for me which gave a few links that would probably help me out. With the same question, Jeannie, however, opened up Google Maps and placed markers on several local establishments that sold chicken wings within a 10 mile radius, which I could simply tap and either call, get directions, or in some cases see a menu/hours. Also, she'll play 20 questions with you.
Have you ever tried Siri in the real world..with background noises and road noise? Its a gimick ...it doesn't work...it needs complete silence to work...who has that..